diff --git a/doc/sample/Exception.im b/doc/sample/Exception.im
index a6a1f8b..4ee7948 100644
--- a/doc/sample/Exception.im
+++ b/doc/sample/Exception.im
@@ -1,7 +1,7 @@
 try
     x = 0
     --v = Int parse:'342'
-catch (#err:number_format, err) in
+catch ($err:number_format, err) in
     x = 1
     --cout put:'Cannot parse integer string ({err})'
 catch (_, err) in
diff --git a/doc/sample/Incorrect.im b/doc/sample/Incorrect.im
new file mode 100644
index 0000000..60d27d9
--- /dev/null
+++ b/doc/sample/Incorrect.im
@@ -0,0 +1,5 @@
+var x = "Hello, world!"
+
+for i in 0 to:100 step:2 do
+  cout put:'Count is {i}'
+end
diff --git a/doc/sample/Simple.iasm b/doc/sample/Simple.iasm
new file mode 100644
index 0000000..4a986ea
--- /dev/null
+++ b/doc/sample/Simple.iasm
@@ -0,0 +1,9 @@
+@block [index:#1007]
+	br $L0004
+L0004:
+	ret.n
+@end
+
+@block [index:#1008]
+	ret
+@end
diff --git a/doc/sample/Simple.im b/doc/sample/Simple.im
index a2738da..b2ec0b7 100644
--- a/doc/sample/Simple.im
+++ b/doc/sample/Simple.im
@@ -1,5 +1,3 @@
-var x = "Hello, world!".
+var x = 2 + 255 * 3 / 63.
 
-for (ch, cy) in x do
-    cout put:ch
-end
+cout put:x.